Bluesky is once again having a wobble. The platform said some of its systems are down and that it’s “investigating an incident with service in one of our reginos” (that’s Bluesky’s typo, not mine). The issue appears to have started at 1:42AM ET and was still persisting as of 11AM when this story was originally published. Since then, the site has been experiencing intermitent interuptions, including at times to its status page where users should be able to monitor outages.

At 7:47PM ET, the platform explained that it’s been attempting to mitigate “a sophisticated Distributed Denial-of-Service (DDoS) attack, which intensified throughout the day.” It said the attack had caused interruptions to users’ feeds, notifications, threads and search, all of which the Engadget team experienced first-hand at various points through the day. While DDoS attacks are frequently used as virtual smokescreens for hacks, Bluesky says it has “not seen any evidence of unauthorized access to private user data.” The social media service had another brief outage earlier this month.

The outage is ongoing, but due to its intermittent nature it’s more of a rolling blackout than a power outage. Bluesky says it will provide another update on the situation by 1PM ET on April 17.

Update, April 16, 8PM ET: This story was updated after publish with an of the outage from Bluesky.